Seabird 2000 Maps and Figures

The following maps and figures are products of the Seabird 2000 survey, a major initiative to survey all breeding seabirds in Britain and Ireland. The results are compared with two earlier breeding seabird censuses, allowing analyses of population trends over 30 years.

Northern Fulmar Fulmaris glacialis (PDF, 2.1 mb)

Table 1. Numbers of breeding Northern Fulmars (AOS) in Britain
and Ireland 1969–2002.

Table 2. Changes in the number of breeding Northern Fulmars
(AOS) at major colonies in Britain and Ireland between the SCR
Census (1985–88) and Seabird 2000 (1998–2002).

Table 3. International context.

Figure 1a. Abundance and distribution of breeding Northern
Fulmars in Britain and Ireland 1998–2002.

Figure 1b. Abundance and distribution of breeding Northern
Fulmars in Orkney and Shetland 1998–2002.

Figure 2. Changes in the number of breeding Northern Fulmars
(AOS) at major colonies in Britain and Ireland between the SCR
Census (1985–88) and Seabird 2000 (1998–2002).

Manx Shearwater Puffinus puffinus (PDF, 1.0 mb)

Table 1. Response rates to tape playback of male calls by Manx
Shearwaters.

Table 2. Numbers of Manx Shearwaters (AOS) at colonies in Britain
and Ireland (1998–2002) compared to previous evidence of breeding
given by Cramp et al. (1974) and Lloyd et al. (1991).

Table 3. Numbers of breeding Manx Shearwaters (AOS) in Britain
and Ireland 1999–2002.

Table 4. International context.

Figure 1. Abundance and distribution of breeding Manx Shearwaters
in Britain and Ireland 1998–2002.

European Storm-petrel Hydrobates pelagicus (PDF, 1.1 mb)

Table 1. Response rates to tape playback of purr calls by European

Storm-petrels.

Table 2. Numbers of European Storm-petrels (AOS) at colonies in
Britain and Ireland (1999–2002) compared to previous evidence of
breeding given by Cramp et al. (1974) and Lloyd et al. (1991).

Table 3. Numbers of breeding European Storm-petrels (AOS) in
Britain and Ireland 1999–2002.

Table 4. International context.

Figure 1. Abundance and distribution of breeding European

Storm-petrel Storm-petrels in Britain and Ireland 1998–2002.

Leach's Storm-petrel Oceanodroma leucorhoa (PDF, 1.2 mb)

Table 1. Response rates to tape playback of male chatter call by

Leach's Storm-petrel.

Table 2. Numbers of Leach's Storm-petrels (AOS) at colonies in
Britain and Ireland (1999–2002) compared to previous evidence of
breeding given by Cramp et al. (1974) and Lloyd et al. (1991).

Table 3. Number of predators present (breeding pairs) at colonies of
Leach's Storm-petrels.

Table 4. International context.

Figure 1. Abundance and distribution of breeding Leach's

Storm-petrel Storm-petrels in Britain and Ireland 1999–2001.

Figure 2 Relationship between colony size (plotted on a log-scale axis) and proximity of deep oceanic water (1,000 m isobath).

Northern Gannet Morus bassanus (PDF, 2.0 mb)

Table 1. Numbers of breeding Northern Gannets (AOS/AON) in
Britain and Ireland 1968–2000.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Northern Gannets
in Britain and Ireland 1994–95.

Figure 2. Changes in the numbers of breeding Northern Gannets (AOS/AON) at all colonies in Britain and Ireland from 1984–85
to 1994–95.

Great Cormorant Phalacrocorax carbo (PDF, 2.0 mb)

Table 1. Numbers of breeding Great Cormorants (AON) in Britain
and Ireland 1969–2002.

Table 2. Changes in the number of breeding Great Cormorants
(AON) at major coastal and inland colonies in Britain and Ireland
between the SCR Census (1985–88) and Seabird 2000 (1999–2002).

Table 3. International context.

Figure 1. Abundance and distribution of breeding Great Cormorants
in Britain and Ireland 1998–2002.

Figure 2. Changes in the number of breeding Great Cormorants
(AON) at major coastal and inland colonies in Britain and Ireland
between the SCR Census (1985–88) and Seabird 2000 (1999–2002).

European Shag Phalacrocorax aristotelis (PDF, 2.0 mb)

Table 1. Numbers of breeding European Shags (AON) in Britain and
Ireland 1969–2002.

Table 2. Changes in the number of breeding European Shags (AON)
at major colonies in Britain and Ireland between the SCR Census
(1985–88) and Seabird 2000 (1999–2002).

Table 3. International context.

Figure 1. Abundance and distribution of breeding European Shags
in Britain and Ireland 1998–2002.

Figure 2. Changes in the number of breeding European Shags
(AON) at major colonies in Britain and Ireland between the SCR
Census (1985–88) and Seabird 2000 (1998–2002).

Arctic Skua Stercorarius parasiticus (PDF, 1.1 mb)

Table 1a. Numbers of breeding Arctic Skuas (AOT) in Scotland
1969–2002.

Table 1b. Numbers of breeding Arctic Skuas (AOT) in Orkney in
1982, 1992 and Seabird 2000 (1998–2002).

Table 1c. Numbers of breeding Arctic Skuas (AOT) in Shetland in
1985–86, 1992 and Seabird 2000 (1998–2002).

Table 2. Changes in the number of breeding Arctic Skuas (AOT) at
major colonies or areas from 1969 to 2002.

Table 3. International context.

Figure 1a. Abundance and distribution of breeding Arctic Skuas
(AOT) in Britain and Ireland 1998–2002.

Figure 1b. Abundance and distribution of breeding Arctic Skuas
in Orkney and Shetland 1998–2002.

Figure 2. Changes in the number of breeding Arctic Skuas (AOT)
at all colonies (except in Orkney and Shetland where change is
denoted for each count are a— see Figure 1b and Tables 1b and 1c
for definitions) from 1979–88 to 1998–2002.

Great Skua Catharacta skua (PDF, 1.2 mb)

Table 1a. Numbers of breeding Great Skuas (AOT) in Scotland and
Ireland 1969–2002.

Table 1b. Numbers of breeding Great Skuas (AOT) in Orkney in
1982, 1992 and Seabird 2000 (1998–2002).

Table 1c. Numbers of breeding Great Skuas (AOT) in Shetland in
1985–86, 1992 and Seabird 2000 (1998–2002).

Table 2. Changes in the number of breeding Great Skuas (AOT) at
major colonies or areas from 1969 to 2002.

Table 3. International context.

Figure 1a. Abundance and distribution of breeding Great Skuas in
Britain and Ireland 1998–2002.

Figure 1b. Abundance and distribution of breeding Great Skuas in
Orkney and Shetland 1998–2002.

Figure 2. Changes in the number of breeding Great Skuas (AOT)
at all colonies (except in Orkney and Shetland where change is
denoted for each count are a— see Figure 1b and Tables 1c and 1c
for definitions) from 1979–88 to 1998–2002.

Mediterranean Gull Larus melanocephalus (PDF, 1.0 mb)

Table 1. Numbers of breeding Mediterranean Gulls (AON) in

Gull Britain and Ireland 1969–2002.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Mediterranean

Gull Gulls in Britain and Ireland 1999–2002.

Black-headed Gull Larus ridibundus (PDF, 1.1 mb)

Table 1a. Numbers of coastal-breeding Black-headed Gulls (AON)

Gull in Britain and Ireland 1969–2002.

Table 1b. Numbers of inland and coastal-breeding Black-headed
Gulls (AON) in Britain and Ireland 1985–2002.

Table 2. Changes in the number of breeding Black-headed Gulls
(AON) at major coastal and inland colonies in Britain and Ireland
between the SCR Census (1985–88) and Seabird 2000 (1998–2002).

Table 3. International context.

Figure 1. Abundance and distribution of breeding Black-headed

Gull Gulls in Britain and Ireland 1998–2002.

Common Gull Larus canus (PDF, 1.1 mb)

Table 1. Numbers of coastal-breeding Common Gulls (AON) in
Britain and Ireland 1969–2002.

Table 2. Numbers of roof-nesting Common Gulls (AON) in Scotland 1976–2002.

Table 3. International context.

Figure 1. Abundance and distribution of breeding Common Gulls
in Britain and Ireland 1998–2002.

Lesser Black-backed Gull Larus fuscus (PDF, 2.1 mb)

Table 1. Numbers of coastal-breeding Lesser Black-backed Gulls

(AON) in Britain and Ireland 1969–2002.

Table 2. Changes in the number of breeding Lesser Black-backed
Gulls (AON) at major colonies in Britain and Ireland between the
SCR Census (1985–88) and Seabird 2000 (1998–2002).

Table 3. Numbers of roof-nesting Lesser Black-backed Gulls (AON)
in Britain and Ireland 1976–2002.

Table 4. International context.

Figure 1. Abundance and distribution of breeding Lesser Black-backed

backed Gull Gulls in Britain and Ireland 1998–2002.

Figure 2. Changes in the number of breeding Lesser Black-backed
Gulls (AON) at major colonies in Britain and Ireland between SCR
Census (1985–88) and Seabird 2000 (1998–2002).

Herring Gull Larus argentatus (PDF, 2.1 mb)

Table 1. Numbers of coastal-breeding Herring Gulls (AON) in
Britain and Ireland 1969–2002.

Table 2. Changes in the number of breeding Herring Gulls (AON)
at major colonies in Britain and Ireland between the SCR Census
(1985–88) and Seabird 2000 (1998–2002).

Table 3. Numbers of roof-nesting Herring Gulls (AON) in Britain
and Ireland 1976–2002.

Table 4. International context.

1. Abundance and distribution of breeding Herring Gulls in
Britain and Ireland 1998–2002.

Figure 2. Changes in the number of breeding Herring Gulls (AON)
at major colonies in Britain and Ireland between SCR Census
(1985–88) and Seabird 2000 (1998–2002).

Great Black-backed Gull Larus marinus (PDF, 2.1 mb)

Table 1. Numbers of coastal-breeding Great Black-backed Gulls

(AON) in Britain and Ireland 1969–2002.

Table 2. Changes in the number of breeding Great Black-backed
Gulls (AON) at major colonies in Britain and Ireland between the
SCR Census (1985–88) and Seabird 2000 (1998–2002).

Table 3. Numbers of roof-nesting Great Black-backed Gulls (AON)
in Britain 1976–2002.

Table 4. International context.

Figure 1. Abundance and distribution of breeding Great Black-backed

backed Gull Gulls in Britain and Ireland 1998–2002.

Figure 2. Changes in the number of breeding Great Black-backed
Gulls (AON) at major colonies in Britain and Ireland between SCR
Census (1985–88) and Seabird 2000 (1998–2002).

Black-legged Kittiwake Rissa tridactyla (PDF, 2.0 mb)

Table 1. Numbers of breeding Black-legged Kittiwakes (AON) in

Britain and Ireland 1969–2002.

Table 2. Changes in the number of breeding Black-legged Kittiwakes
(AON) at major colonies in Britain and Ireland between the SCR
Census (1985–88) and Seabird 2000 (1998–2002).

Table 3. International context.

Figure 1. Abundance and distribution of breeding Black-legged

Kittiwakes in Britain and Ireland 1998–2002.

Figure 2. Changes in the number of breeding Black-legged
Kittiwakes (AON) at major colonies in Britain and Ireland between
the SCR Census (1985–88) and Seabird 2000 (1999–2002).

Sandwich Tern Sterna sandvicensis (PDF, 1.0 mb)

Table 1. Numbers of breeding Sandwich Terns (AON) in Britain
and Ireland 1969–2002.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Sandwich Terns
in Britain and Ireland 1998–2002.

Roseate Tern Sterna dougallii (PDF, 1.0 mb)

Table 1. Numbers of breeding Roseate Terns (AON) in Britain
and Ireland 1969–2000.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Roseate Terns in
Britain and Ireland 1999–2000.

Common Tern Sterna hirundo (PDF, 1.1 mb)

Table 1. Numbers of breeding Common Terns (AON) in Britain
and Ireland 1969–2002.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Common Terns
in Britain and Ireland 1998–2002.

Arctic Tern Sterna paradisaea (PDF, 1.1 mb)

Table 1. Numbers of breeding Arctic Terns (AON) in Britain and
Ireland 1969–2002.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Arctic Terns in Britain and Ireland 1998–2002.

Little Tern Sterna albifrons (PDF, 566 kb)

Table 1. Numbers of breeding Little Terns (AON) in Britain and
Ireland 1969–2002.

Table 2. International context.

Figure 1. Abundance and distribution of breeding Little Terns in
Britain and Ireland 1998–2002.

Common Guillemot Uria aalge (PDF, 2.0 mb)

Table 1. Numbers of individual Common Guillemots in Britain and

t Ireland 1969–2002.

Table 2. Changes in the number of individual Common Guillemots
at major sites in Britain and Ireland between the SCR Census
(1985–88) and Seabird 2000 (1998–2002).

Table 3. International context.

Figure 1. Abundance and distribution of Common Guillemots in

Guillemot Britain and Ireland 1998–2002.

Figure 2. Changes in the number of Common Guillemot (individual
adults) at major sites in Britain and Ireland between SCR census
(1985–88) and Seabird 2000 (1998–2002).

Razorbill Alca torda (PDF, 2.0 mb)

Table 1. Numbers of individual Razorbills in Britain and Ireland
1969–2002.

Table 2. Changes in the number of individual razorbills at major
colonies in Britain and Ireland between the SCR Census (1985–88)
and Seabird 2000 (1998–2002).

Table 3. International context.

Figure 1. Abundance and distribution of Razorbills in Britain and
Ireland 1998–2002.

Figure 2. Changes in the number of individual Razorbills at major
sites in Britain and Ireland between the SCR census (1985–88) and
Seabird 2000 (1998–2002).

Black Guillemot Cepphus grylle (PDF, 2.2 mb)

Table 1. Numbers of individual pre-breeding Black Guillemots in
Britain and Ireland 1982–2003.

Table 2. Numbers of individual pre-breeding Black Guillemots in
Orkney and Shetland 1982–2002.

Table 3. Numbers of individual Black Guillemots nesting in
man-made structures 1983–2001.

Table 4. International context.

Figure 1. Abundance and distribution of pre-breeding Black
Guillemots in Britain and Ireland 1998–2003.

Figure 2. Changes in the number of adult Black Guillemots
(pre-breeding counts) in Britain and Northern Ireland between
the SCR Census (1982–91) and Seabird 2000 (1998–2003).

Atlantic Puffin Fratercula arctica (PDF, 2.0 mb)

Table 1. Numbers of breeding Atlantic Puffins (AOB) in Britain
and Ireland 1969–2002.

Table 2. Changes in the number of breeding Atlantic Puffins in
Britain and Ireland at colonies where the same count units were used
in the SCR Census (1985–88) and Seabird 2000 (1998–2002).

Table 3. International context.

Figure 1. Abundance and distribution of breeding Atlantic Puffins in
Britain and Ireland 1998–2002.

Figure 2. Changes in the number of Atlantic Puffins at colonies where
the same count units were used in the SCR Census and Seabird 2000.

Census Methods Data Processing and Analysis References Seabird 2000